Crews are racing to rip through ground as winter descends. Ken and right-hand man Guillaume fight to keep the Beast sluicing through subzero temperatures only to discover the dirt they’ve banked on has run dry. Cam’s plans to mine an ancient waterfall go sideways when the treacherous ground threatens to bench his iron for good. Karl and right-hand man Kyle’s mechanical skills are put to the test when the season takes its toll on Sulphur Creek’s operation.